mehmet karakaya wrote:
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dont put the logic power supply lines in the same busbar with power lines of steppers or other power equipment


If you have logic power lines of 24V you can do that
as it has got enough noise margine and definitely a Very Big resistance before your opto so dont worry but never do this with 5V lines .............mehmet state the reason for your statement maybe I miss some knowledge .I think if you use 24v power supply logic line you definitely use 2.2K resistor in series to drop it and a tantalum along with it .


I will agree if logic lines a 5V TTL or so .

Rick